How are acids and bases different? how do their ph values differ?

Which of the following would most likely be key to gathering evidence that the rna world hypothesis is valid? creation of suitable environments for long-term study of single-celled organisms simulation of early earth conditions and long-term study of the resulting molecules development of a system for studying the microsphere's ability to absorb additional molecules categorization of the different specific conditions that result in the development of microspheres

Anton created a chart listing different types of materials. which best complete the chart?

Which of the following is a testable hypotheses?